Locomotive stoker



April 25, 1939. c, J. sURDY LocoMoTIyE sToKER' Filed Jan. 22, 1938 2Sheets-Sheet l INVENTOR Char/e5 Sura@ IIS nw. .www ,mul .Qml E Wm. Nwwww ,f L ,l MHIMHNM; v ww mm, mN QN #Vwo x Naw, WN I@ W L a .m

ATTORNEYS April 25, 1939.

c. J. SURDY/ LcoMoTIvE sToKER 2 Sheets-Sheet 2 Filed Jan. 22, 1938INVENTOR Char/e5 J SLI/dy BY Patented Apr. 25,

PATENT OFFICE LOCOMOTIVE STOKER Charles J. Surdy, Tuckahoe, N. Y.,assignor to The Standard Stoker Company, Incorporated, a corporation ofDelaware Application'January 22, 1938, Serial No. 186,279

4 Claims.

This invention relates to locomotive stokers of the type feeding throughan opening in the rebox backwall. n.

It is the principal object of this invention to provide an improvedStoker which feeds fuel through the ring opening in the locomotiveboiler backwall, such Stoker being arranged to provide unusually freeaccess to the interior of the rebox through said opening and having adoor operable to open and close communication with said firebox.

A further object of this invention is to provide a Stoker of the aboveconstruction whereby trimming of the fire is more readily accomplished.

It isl also an object of this invention to provide a redoor which ismounted upon the Stoker discharge conduit and arranged for telescopicmovement with respect thereto.

The preferred means by which the several objects are accomplished isdescribed in the following description whichy is accompanied bydrawings, in which:

Fig.r 1 is a central vertical longitudinal section through the rearwardportion of a locomotive with the invention illustrated in similarsection;

Fig. 2 is an end elevation of the structure shown in Fig. 1 with'portions removed;

Fig. 3 is a sectional view similar to Fig. 1 with the redoor in openposition;

Fig. 4 is a fragmentary Sectional view taken on the line 4--4 of Fig. l;and

Fig. 5 is a fragmentary view taken on the line 5-5 of Fig. 1.

Referring to the drawings, L indicates a locomotive having a boilerrebox I0 provided with a backwall II. Above the level of the cab deckI2, a backwall II is apertured at I3 to provide an opening wherebyaccessl to the interior of the rebox II] may be gained.

Extending upwardly and forwardly from beneath the cab deck I2 is aStoker discharge conduit I4, communicating at its upper forward end withthe rebox I0 through the opening I3. A conveyor screw I5 is rotatablymounted in the conduit I4 and delivers fuel to a distributor Dcomprising a jet head IB adapted to issue blasts of pressure fluid overthe distributor plate I1. The jet head I6 and distributor plate I1 aresecured in known fashion to the front wall I8 of the discharge conduitI4.

The discharge conduit I4 at its upper portion includes a rear wall I9and side walls 2|), 2|, terminating in a common horizontal planedisposed approximately centrally between the upper (Cl. 11o- 101) andlower edges of the ring opening I3. Formed with the forward end of thedischarge conduit I4 is a flange 22 which embraces the firing opening I3and is secured to the backwall II by bolts 23. Above the horizontalplane of the top terminal edges of said rear Wall I9 and side walls 20,2| the inner portions of flange 22 form side members 24, 25 disposedparallel to the backwall II and in close spacial relation therewith.Extending a Short distance rearwardly from the upper portion of theframe 22 is a lip 21 provided with a downwardly opening recess 21a.

It will be observed from Fig. 3 that above the Stoker conduit I4 thereis provided an upwardly directed aperture disposed to the rear of thefiring opening I3. This aperture is adapted to be closed by a redoor Fcomprising a rearwall 29 parallel to the conduit rearwall I9 and a pairof side portions 30, 3|. of the rlredoor rearwall 29, a top wall 9extends forwardly and has a lug 8 formed on its forward edge arranged tofit into the recess 21a of the frame 22. A V-shaped wedge block 1,depends from the underside of the redoor top wall 9. A 25 web 32 at thelower edge of the flredoor F joins the side portions 3|), 3| thereof.`This flredoor F is telescoped over the upper portion of the dischargeconduit I4 and is provided along each side portion 30, 3| with a groove30a, 3|a for 30 engaging a key 20a, 2| a of the conduit side walls 20,2| respectively. The keys 20a, 2|a extend downward from the top edge ofa respective side wall 20, 2|.

When the flredoor F is in a position to close v35 the aperture oppositethe firing opening I3, as shown in Fig. 1, the upper edge of the redoortop wall 9 ts against the lip 21, forming a tight closure thereat. Thelower portions of the side walls 30, 3| and the rearwall 29 remain inoverlapping relation with the corresponding walls of the Stokerdischarge conduit I4, while the forward edges of the side portions 30,3| abut against side members 24, 25, respectively, thereby completelyclosing the aperture opposite the ring opening I3. In order to protectthe firedoor rearwall 29 from the intense heat within the flrebox ID, aperforated baille plate 32a is secured thereto by bolts 33. The firedoorrearwall 29 is also provided with a vision box 34 for 50 observing fireconditions and also for entraining cooling air currents over the balileplate 32a. Immediately above the vision box 34, the iiredoor F isprovided with a handle 35 utilized 120 open the flredoor by manualmeans.

From the upper portion 20 Ordinarily, however, the redoor F is operatedby power means P comprising a cylinder 36 which houses a fluid operatedpiston 31. One end of a rod 38 is connected to the piston 31 while the 5opposite end thereof is connected at 50 to a pair of lugs 5I dependingfrom the web 32 of the redoor F. Pressure iluid is admitted against theupper side of piston 31 by means of a pipe 52 leading from a suitablesource of fluid power.

Admissionof pressure fluid into the cylinder 36 causes downward movementof the piston 31 and the redoor F.

At each upper forward side of the Stoker conduit I4 is a pulley 39, 4Uover which a cable 4I,

42 is trained. One end of each cable 4I, 42 is attached to a sideportion 3.0, 3| of the firedoor while the opposite end is attached to aplunger l 43, 44 mounted in a tube V45, 46, respectively.

The combined weight of the plungers 43, 44 yis slightly greater than theweight of the redoor F so thatin the absence of pressure fluid reactingon the upper side of piston 31, the plungers 43,

44 will descend to the position shown in Fig. 1,

causing the redoor F to be drawn upwardly to closed position.

When the redoor F is thrown open, an aperture opposite the firingopening I3 is formed permitting unrestricted access into the rebox I0.It will also be understood, that, since the lip 21 and side portions 24,25 do not extend a material A.distance rearward of the backwall II, thefireman may more readily trim the re. Trimming of the fire, whichincludes a levelling thereof and breaking up or removing clinkerformations,

is accomplishedV by inserting a hooked rod into.

:i the flrebox. By the construction illustrated, the fireman can readilyinsertr the hooked rod into the furnace at any desired angle because itis possible for the rod to be levered at a point closely 40 adjacentthefirebox backwall II. At the same time, this construction also aids inmanual ring of the rebox since the fireman may thrust the coal scoop aconsiderable distance into the rebox forwardly or laterally, TheV-shaped wedge block 1*functions to split and spread latlerally any coalimmediately above the conveyor screw I5 which might otherwise preventfull downward travel of the flredoor F.

I claim the following as new and useful in the art to which theinvention relates:

1'. In a locomotive i'lrebox having a backwall with a firing openingtherein, the combination comprising a stoker discharge conduit arrangedto communicate with said ring opening and havss ing a rearwall and sidewalls extending above ,the lower edge of said opening, a frame embracingsaid opening including a pair of side members, a door including a pairofside portions each of which is arranged to lit against a correspondingside member of said frame, a rearwall ai" ranged to form an approximateupward continuation of the discharge conduit rearwall, and a top wall,the forward edge of the top wall of said door arranged to t against therear portion of 5 said frame.

2. In a locomotive firebox having a backwall with a firing openingtherein, the combination comprising a stoker discharge conduit arrangedtoV communicate with said ring opening and 10 having a rearwall and sidewalls extending above the lower edge of said opening, a frame embracingsaid opening including a pair of side members the rear edge of each ofwhich is disposed closely adjacent the plane of said firebox back- 15Wall, a door including a pair of side portions each of which is arrangedto fit against a corresponding side member of said frame, a rearwallarranged to lform an approximate upward continu ation of the. dischargeconduit rearwall, and a 20 top wall, the forward4 edgeof the top wallof. said door arranged to t against the rear portion of said frame.

3. In a locomotive rebox having a backwall with a firing openingtherein, the combination 25 comprising a stoker discharge conduit.arrangedto communicate with said ring opening andi.r having a rearwalland side walls extending above the lower edge of said opening, akframe.. ambi-aca ing said opening in cluding a` pair of sidel meub $0..bers, a door telescopically related` with respect to said dischargeconduit and including a. of side portions, each of which is. arranged tot against a corresponding side member of; said frame, a rearwallarranged to form an approxi-135,]

mate upward continuation ot the discharge conduit rearwall, and a topwall, the forward edge of the top wall of said door arranged` to. iitagainst the rear portion of said frame.

4. In a locomotive rebox havingL aA backwally 40, Y Y

with a ring opening therein, thev combination comprising a stokerdischarge conduit arranged to communicate with said rlng opening andhaving a rearwall and sidewallsextending above thelower edgeof saidopeninga framel embracV4 45', ing said opening including a pair,` ofside mem.. bers the rear edge ofV which is/ disposed closely. adjacentthe plane of saidrebox,backwall,` a. door telescopically relatedwithrespect tofsaid discharge conduit and' including, a pair of. side,50, portions each of which is arrangedto fit against a correspondingside member of, said` framea; rearwall arranged to forman approximateup,- ward continuation of the discharge conduit rearwall, and a topwall, the forwardedgeo they 551,. top wall of said door arrangedgtoiitagainsttherear portion of saidframe.

cHARLEs J. simpy, Y

